公开(公告)号：US08167101B2

公开(公告)日：2012-05-01

申请号：US12230860

申请日：2008-09-05

申请人： Satoshi Chikamatsu

发明人： Satoshi Chikamatsu

IPC分类号： F16F9/34

CPC分类号： F16F9/5126

摘要： A shock absorber comprises a first passage (2a, 2b) and a second passage (15) connecting a first fluid chamber (41) and a second fluid chamber (42). A throttle (12, 14) narrows an inflow of fluid to the first passage (2a, 2b) according to an applied displacement pressure. The displacement pressure includes a fluid pressure in one of the two fluid chambers (41, 42) and a pressure that depends on a velocity of the fluid flow through the throttle (12, 14). A spring (25, 29) biases the throttle (12, 14) in the opposite direction to narrow the fluid flow. The second passage (15) comprises a pair of orifices (16a, 17a). By exerting a pressure between the pair of orifices (16a, 17a) on the throttle (12, 14) in the opposite direction to narrow the fluid flow, the spring load required of the spring (25, 29) is reduced.

摘要翻译： 减震器包括第一通道（2a，2b）和连接第一流体室（41）和第二流体室（42）的第二通道（15）。 节气门（12,14）根据施加的位移压力使流体流入第一通道（2a，2b）变窄。 位移压力包括在两个流体室（41,42）之一中的流体压力和取决于通过节流阀（12,14）的流体流速的压力。 弹簧（25,29）沿相反方向偏压节流阀（12,14），以使流体流动变窄。 第二通道（15）包括一对孔（16a，17a）。 通过在相反方向上在节流阀（12,14）上的一对孔口（16a，17a）之间施加压力以使流体流动变窄，弹簧（25,29）所需的弹簧载荷减小。

公开(公告)号：US20080149438A1

公开(公告)日：2008-06-26

申请号：US12003302

申请日：2007-12-21

申请人： Satoshi Chikamatsu ,  Kouichi Watanabe

发明人： Satoshi Chikamatsu ,  Kouichi Watanabe

IPC分类号： F16F9/34

CPC分类号： F16F9/512 ,  F16F9/3485

摘要： A damping valve (10) resists a flow of fluid from a first fluid chamber (41) to a second fluid chamber (42) which are separated by a piston (1). A partitioning member (24, 27-29, 52) partitions an inflow space. (A, B) of a passage (2) in the first fluid chamber (41). A spool (17, 31, 51) decreases a flow cross-sectional area of a flow path from the first fluid chamber (41) into the inflow space (A, B) according to a differential pressure between the fluid chambers. By ensuring a gap between the outer circumference of the valve disk (1) and the partitioning member (24, 27-29, 52) which permanently allows fluid to flow from the first chamber (41) into the inflow space (A, B), the damping force characteristic in a high speed region of piston displacement can be set independently of the damping force characteristic in other regions.

摘要翻译： 阻尼阀（10）阻止流体从第一流体室（41）流向由活塞（1）分开的第二流体室（42）。 分隔构件（24,27-29,52）分隔入流空间。 （21）中的通道（2）的位置（A，B）。 阀芯（17,31,51）根据流体室之间的压差，将从第一流体室（41）流入流入空间（A，B）的流路的流动横截面面积减小。 通过确保阀盘（1）的外圆周和永久地允许流体从第一腔室（41）流入流入空间（A，B）的分隔构件（24,27-29,52）之间的间隙， 可以独立于其他区域的阻尼力特性来设定活塞位移的高速区域的阻尼力特性。

公开(公告)号：US5309944A

公开(公告)日：1994-05-10

申请号：US64198

申请日：1993-05-19

申请人： Satoshi Chikamatsu ,  Noboru Kurita ,  Koji Morita ,  Yoshiyuki Eto

发明人： Satoshi Chikamatsu ,  Noboru Kurita ,  Koji Morita ,  Yoshiyuki Eto

IPC分类号： F16K31/06 ,  F15B13/043 ,  G05D16/00 ,  G05D16/20 ,  F15B13/044

CPC分类号： F15B13/0435 ,  G05D16/2013 ,  Y10T137/86622

摘要： This invention relates to a pressure reducing valve wherein a spool is driven axially by a first plunger which moves according to the magnetization state of a first solenoid, and a control port is connected to a supply port and a tank port according to the axial position of this spool. The pressure of the control port acts on the spool in the opposite direction to that of the plunger via a feedback passage, and the pressure increases or decreases according to the current flowing through the first solenoid. According to this invention, a second plunger is arranged in series with the first plunger, and a spring tends to push the second plunger toward the first plunger. A second magnetized solenoid however keeps the second plunger held back against the restoring force of the spring so that it is not in contact with the first plunger, and releases the second plunger so that it pushes the first plunger when the current fails. Hence, even if the current supplied to the first and second solenoids is cut off, the control port maintains the predetermined pressure, and a fail-safe mechanism is realized by means of a simple construction.

摘要翻译： 减压阀技术领域本发明涉及一种减压阀，其中阀芯由第一柱塞轴向驱动，该第一柱塞根据第一螺线管的磁化状态移动，并且控制端口根据轴向位置连接到供油口和油箱端口 这个线轴。 控制端口的压力通过反馈通道与柱塞相反的方向作用在阀芯上，并且压力根据流经第一螺线管的电流而增加或减小。 根据本发明，第二柱塞与第一柱塞串联布置，并且弹簧倾向于将第二柱塞推向第一柱塞。 然后，第二磁化螺线管使第二柱塞保持抵抗弹簧的恢复力，使得其不与第一柱塞接触，并释放第二柱塞，使得当电流失效时它推动第一柱塞。 因此，即使切断供给到第一和第二螺线管的电流，控制端口保持预定的压力，并且通过简单的结构实现故障保护机构。

公开(公告)号：US08794403B2

公开(公告)日：2014-08-05

申请号：US12867885

申请日：2009-02-09

申请人： Satoshi Chikamatsu

发明人： Satoshi Chikamatsu

IPC分类号： F16F9/50 ,  F16F9/49

CPC分类号： F16F9/512 ,  F16F9/348

摘要： A port (2a, 2b) allows a fluid to flow from a first fluid chamber (41, 42) to a second fluid chamber (42, 41) separated by the piston (1) of a shock absorber via a damping valve (10a, 10b). A flow sectional area of a passage (21d, 21e, 26d, 26e) connecting the first fluid chamber (41, 42) to the port (2a, 2b) is reduced by a throttle valve (12, 14, 51, 52) according to a pressure in the first fluid chamber (41, 42). A pressure of a pressure chamber (18, 19) and a biasing force of a plate spring (25, 29, 71, 72) acts on the throttle valve (12, 14, 51, 52) in an opposite direction to the pressure of the first fluid chamber (41, 42). The hydraulic shock absorber is thereby caused to generate different damping force characteristics depending on a stroke speed of the piston (1).

摘要翻译： 端口（2a，2b）允许流体通过阻尼阀（10a，2b）从第一流体室（41,42）流到由缓冲器的活塞（1）分开的第二流体室（42,41） 10b）。 通过节流阀（12,14,51,52），将第一流体室（41,42）与端口（2a，2b）连接的通路（21d，21e，26d，26e）的流路截面积按照 到第一流体室（41,42）中的压力。 压力室（18,19）的压力和板簧（25,29,71,72）的作用力作用在节流阀（12,14,51,52）上，与压力室 第一流体室（41,42）。 由此，液压缓冲器根据活塞（1）的行程速度产生不同的阻尼力特性。

公开(公告)号：US07954609B2

公开(公告)日：2011-06-07

申请号：US12003302

申请日：2007-12-21

申请人： Satoshi Chikamatsu ,  Kouichi Watanabe

发明人： Satoshi Chikamatsu ,  Kouichi Watanabe

IPC分类号： F16F9/49 ,  F16F9/34

CPC分类号： F16F9/512 ,  F16F9/3485

摘要： A damping valve (10) resists a flow of fluid from a first fluid chamber (41) to a second fluid chamber (42) which are separated by a piston (1). A partitioning member (24, 27-29, 52) partitions an inflow space (A, B) of a passage (2) in the first fluid chamber (41). A spool (17, 31, 51) decreases a flow cross-sectional area of a flow path from the first fluid chamber (41) into the inflow space (A, B) according to a differential pressure between the fluid chambers. By ensuring a gap between the outer circumference of the valve disk (1) and the partitioning member (24, 27-29, 52) which permanently allows fluid to flow from the first chamber (41) into the inflow space (A, B), the damping force characteristic in a high speed region of piston displacement can be set independently of the damping force characteristic in other regions.

摘要翻译： 阻尼阀（10）阻止流体从第一流体室（41）流向由活塞（1）分开的第二流体室（42）。 分隔构件（24,27-29,52）分隔第一流体室（41）中的通道（2）的流入空间（A，B）。 阀芯（17,31,51）根据流体室之间的压差，将从第一流体室（41）流入流入空间（A，B）的流路的流动横截面面积减小。 通过确保阀盘（1）的外圆周和永久地允许流体从第一腔室（41）流入流入空间（A，B）的分隔件（24,27-29,52）之间的间隙， 可以独立于其他区域的阻尼力特性来设定活塞位移的高速区域的阻尼力特性。

公开(公告)号：US20110024247A1

公开(公告)日：2011-02-03

申请号：US12867885

申请日：2009-02-09

申请人： Satoshi Chikamatsu

发明人： Satoshi Chikamatsu

IPC分类号： F16F9/348

CPC分类号： F16F9/512 ,  F16F9/348

摘要： A port (2a, 2b) allows a fluid to flow from a first fluid chamber (41, 42) to a second fluid chamber (42, 41) separated by the piston (1) of a shock absorber via a damping valve (10a, 10b). A flow sectional area of a passage (21d, 21e, 26d, 26e) connecting the first fluid chamber (41, 42) to the port (2a, 2b) is reduced by a throttle valve (12, 14, 51, 52) according to a pressure in the first fluid chamber (41, 42). A pressure of a pressure chamber (18, 19) and a biasing force of a plate spring (25, 29, 71, 72) acts on the throttle valve (12, 14, 51, 52) in an opposite direction to the pressure of the first fluid chamber (41, 42). The hydraulic shock absorber is thereby caused to generate different damping force characteristics depending on a stroke speed of the piston (1).

摘要翻译： 端口（2a，2b）允许流体通过阻尼阀（10a，2b）从第一流体室（41,42）流到由缓冲器的活塞（1）分开的第二流体室（42,41） 10b）。 通过节流阀（12,14,51,52），将第一流体室（41,42）与端口（2a，2b）连接的通路（21d，21e，26d，26e）的流路截面积按照 到第一流体室（41,42）中的压力。 压力室（18,19）的压力和板簧（25,29,71,72）的作用力作用在节流阀（12,14,51,52）上，与压力室 第一流体室（41,42）。 由此，液压缓冲器根据活塞（1）的行程速度产生不同的阻尼力特性。

公开(公告)号：US20090065315A1

公开(公告)日：2009-03-12

申请号：US12230860

申请日：2008-09-05

申请人： Satoshi Chikamatsu

发明人： Satoshi Chikamatsu

IPC分类号： F16F9/34

CPC分类号： F16F9/5126

摘要： A shock absorber comprises a first passage (2a, 2b) and a second passage (15) connecting a first fluid chamber (41) and a second fluid chamber (42). A throttle (12, 14) narrows an inflow of fluid to the first passage (2a, 2b) according to an applied displacement pressure. The displacement pressure includes a fluid pressure in one of the two fluid chambers (41, 42) and a pressure that depends on a velocity of the fluid flow through the throttle (12, 14). A spring (25, 29) biases the throttle (12, 14) in the opposite direction to narrow the fluid flow. The second passage (15) comprises a pair of orifices (16a, 17a). By exerting a pressure between the pair of orifices (16a, 17a) on the throttle (12, 14) in the opposite direction to narrow the fluid flow, the spring load required of the spring (25, 29) is reduced.

摘要翻译： 减震器包括第一通道（2a，2b）和连接第一流体室（41）和第二流体室（42）的第二通道（15）。 节气门（12,14）根据施加的位移压力使流体流入第一通道（2a，2b）变窄。 位移压力包括在两个流体室（41,42）之一中的流体压力和取决于通过节流阀（12,14）的流体流速的压力。 弹簧（25,29）沿相反方向偏压节流阀（12,14），以使流体流动变窄。 第二通道（15）包括一对孔（16a，17a）。 通过在相反方向上在节流阀（12,14）上的一对孔口（16a，17a）之间施加压力以使流体流动变窄，弹簧（25,29）所需的弹簧载荷减小。